The remaining two countries, Thailand and Nepal, have sent teams of observers for the exercise, the focus of which is counter-terrorism operations in a semi-urban environment. (Express photos by Arul Horizon)

The field training exercise began from September 10. (Express photos by Arul Horizon)

The training exercise is being held at the Foreign Training Node at Aundh in Pune. (Express photos by Arul Horizon)

The last-minute decision of the Nepal army to 'cancel' its participation came after an oral instruction from PM KP Oli, barely a day before a group of five officials and 30 junior personnel from the country were set to leave for Pune. (Express photos by Arul Horizon)

The field training exercise is scheduled until September 16. (Express photos by Arul Horizon)